CN106882899A - A kind of farmland nitrogen phosphorus pollution of area source control and recycling system and method - Google Patents
A kind of farmland nitrogen phosphorus pollution of area source control and recycling system and method Download PDFInfo
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- CN106882899A CN106882899A CN201710071099.8A CN201710071099A CN106882899A CN 106882899 A CN106882899 A CN 106882899A CN 201710071099 A CN201710071099 A CN 201710071099A CN 106882899 A CN106882899 A CN 106882899A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Agronomy & Crop Science (AREA)
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- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of control of farmland nitrogen phosphorus pollution of area source and recycling system and method, it is related to agriculture environmental protection field.The system includes：The main ridge of farmland surrounding and the branch ridge being arranged in length and breadth inside farmland are arranged on, and are arranged on the water plant planting canal around main ridge；Wherein, planted on main ridge and branch ridge and be implanted with green plant, and the planting aquatic plants in water plant planting canal；Embedded underground between collection drainage facility and water plant planting canal has many pipelines；Filtering absorption facility is filtering adsorption tank, including：First buffer zone, screen pack, nitrogen phosphorus sorbing material and the second buffer zone；Pulsating pump is provided with first buffer zone, suction pump is provided with the second buffer zone；Water storage facility is reservoir, and emptying gate is provided with water storage facility.The present invention can be carried out preferably controlling to widespread pollution from the overuse of fertilizers and pesticides in rural area and carry out effective recycling to nitrogen P elements.
Description
Technical field
The present invention relates to agriculture environmental protection field, more particularly relate to a kind of farmland nitrogen phosphorus pollution of area source control and reclaim
Using system and method.
Background technology
With the effective control to point-source pollutions such as industrial wastewater and city domestic sewages, widespread pollution from the overuse of fertilizers and pesticides in rural area has turned into water
The important sources of environmental pollution.Wherein, nitrogen (N), phosphorus (P) pollution are typical class widespread pollution from the overuse of fertilizers and pesticides in rural area, and it is to cause water body
The main matter of eutrophication.Therefore, farmland N, P pollution of area source is solved the problems, such as, there is important reality to body eutrophication control
Border meaning.
At present, the technology of widespread pollution from the overuse of fertilizers and pesticides in rural area is controlled, it is main including reducing chemical fertilizer input, artificial swamp, ecological canal etc.
Technology.By reducing the measure that chemical fertilizer puts into, the loss of nitrogen phosphorus in runoff can be efficiently reduced, but frequently result in subtracting for crop
Produce.Widespread pollution from the overuse of fertilizers and pesticides in rural area is controlled using artificial swamp, preferable nitrogen phosphorus ligands effect can be obtained, but floor space is larger, at me
It is difficult to further promote in the case of state's soil resource-constrained.Although and ecological canal is also obtained to the nitrogen phosphorus emission reduction in water body
Some control effects, but it is poor to the removal effect of phosphorus element.Therefore, the technology of existing control widespread pollution from the overuse of fertilizers and pesticides in rural area, can only
Widespread pollution from the overuse of fertilizers and pesticides in rural area is necessarily controlled, effective profit of the preferable control and resource to widespread pollution from the overuse of fertilizers and pesticides in rural area can not be reached
With.
In sum, nitrogen phosphorus non-point source pollution control technique in farmland of the prior art, existing can not reach to agricultural area source
The preferable control of pollution and effective problem for utilizing of resource.
The content of the invention
The embodiment of the present invention provides a kind of farmland nitrogen phosphorus pollution of area source control and recycling system and method, is used to solve
There is a problem of reaching in the prior art and the preferable control of widespread pollution from the overuse of fertilizers and pesticides in rural area and the effective of resource are utilized.
The embodiment of the present invention provides a kind of farmland nitrogen phosphorus pollution of area source control and recycling system, including：Absorption facility,
Collection drainage facility, filtering absorption facility and water storage facility；
The absorption facility includes：The main ridge of farmland surrounding and the branch ridge being arranged in length and breadth inside farmland are arranged on, with
And it is arranged on the water plant planting canal around main ridge；Wherein, planted on main ridge and branch ridge and be implanted with green plant, and it is aquatic
Planted in planting canal and be implanted with water plant；
Green plant is set on main ridge and branch ridge, the moisture for absorbing the nitrogenous P elements being had more than needed in farmland；In water
Planting aquatic plants in plant plantation canal, for the moisture using the nitrogenous P elements that main ridge is crossed in farmland；
The collection drainage facility is the collecting-tank that setting is affixed with the water plant planting canal；The collection drainage facility and described
The communications ports bottom of water plant planting canal higher than the water plant planting canal bottom, and it is described collection drainage facility depth
More than the depth of the water plant planting canal；Pipe is embedded between the collection drainage facility and the water plant planting canal
Road；Wherein, the pipeline includes main pipeline, shunt conduit and multiple branch pipe(tube)s；Described main pipeline one end and the collection drainage facility
Bottom connection, the main pipeline other end connect with the shunt conduit main side, and multiple branch ends of the shunt conduit are distinguished
Connected with the water plant planting canal by multiple branch pipe(tube)s；
The filtering absorption facility is filtering adsorption tank；The filtering absorption facility is internally provided with screen pack and nitrogen phosphorus is inhaled
Enclosure material, and the screen pack and the integrally-built both sides of nitrogen phosphorus sorbing material are respectively the first buffer zone and second slow
Deposit region；Be provided with pulsating pump in first buffer zone, and first buffer zone by absorb water water pumping pipe with it is described
Collection drainage facility connection；Suction pump, and second buffer zone are provided with second buffer zone by the water pumping pipe that draws water
Connected with the water storage facility；
The water storage facility is reservoir；Emptying gate is provided with the water storage facility, and emptying gate is higher than the collection
Drainage facility top.
It is preferred that described main ridge width is 1.5~2.0m, highly it is 6~8cm；The branch ridge width is 0.6-
1.2m, is highly 3~5cm；The water plant planting width of the channel degree is 2.0~3.0m, and depth is 1.0~1.5m.
It is preferred that the water plant includes：One or more in reed, wild rice stem, wild kind, aunt calamus.
It is preferred that the green plant includes：One or more in arbor, shrub, draft economic plants.
It is preferred that the length of the filtering absorption facility is 2.0~3.5m, and highly it is 2.5m, width is 1.0~1.5m.
It is preferred that the nitrogen phosphorus sorbing material is nitrogen phosphorus adsorbent.
The embodiment of the present invention provides a kind of farmland nitrogen phosphorus pollution of area source control and recoverying and utilizing method, including：
Green plant is planted on main ridge and branch ridge；
The planting aquatic plants in water plant planting canal；
The moisture of the nitrogenous P elements being had more than needed in farmland is crossed main ridge and is flowed into water plant planting canal；
The moisture of the nitrogenous P elements in water plant planting canal is flowed into collection drainage facility by communications ports；
A moisture part for nitrogenous P elements in collection drainage facility is back in water plant planting canal by pipeline；Catchment
Moisture another part of nitrogenous P elements in facility is flowed into water storage facility by filtering absorption facility；
Moisture in water storage facility is flowed into collection drainage facility by emptying gate.
It is preferred that when the moisture for collecting the nitrogenous P elements in drainage facility is no longer flow into water plant planting canal, opening
Emptying gate, the water in water storage facility is flowed into collection drainage facility；When the moisture of the nitrogenous P elements in collection drainage facility is continued to flow into
When in water plant planting canal, emptying gate is closed, the water in water storage facility is no longer flow into collection drainage facility.
In the embodiment of the present invention, there is provided a kind of farmland nitrogen phosphorus pollution of area source control and recycling system and method, this hair
It is bright by setting ridge and plant on ridge green plant, and water plant planting canal is set and is planted in water plant planting canal
Water plant is planted, the pollution of the nitrogen P elements in the moisture containing nitrogen P elements being had more than needed in farmland has been obtained preferable control,
And effective recycling has been carried out to nitrogen P elements on the premise of it need not excavate multiple irrigation canals and ditches drainages；And by setting
Underground piping, makes the moisture in water plant planting canal constantly be circulated with the moisture in collection drainage facility, i.e. water plant planting canal
After interior nitrogen P elements are absorbed by water plant, nitrogen and phosphorus content reduces, and collects the moisture in drainage facility and constantly inject water plant
In plantation canal, nitrogen and phosphorus content is increased, effective recycling further has been carried out to nitrogen P elements.The present invention is by setting
Filtering absorption facility is put, effective nitrogen phosphorus absorption has been carried out to the moisture in collection drainage facility, make the moisture in inflow water storage facility
Nitrogen and phosphorus content greatly reduce, i.e., the moisture in water storage facility can have multiple use.The present invention controls to store up by emptying gate
Moisture in drainage facility ensure that the moisture in water storage facility is most to being flowed into collection drainage facility, in turn ensure that collection drainage facility
Interior moisture can be constantly injected in water plant planting canal.
Brief description of the drawings
Fig. 1 is a kind of farmland nitrogen phosphorus pollution of area source control provided in an embodiment of the present invention and recycling system structural representation
Figure；
Fig. 2 is a kind of farmland nitrogen phosphorus pollution of area source control provided in an embodiment of the present invention and isocon in recycling system
The structural representation in road；
Fig. 3 is a kind of farmland nitrogen phosphorus pollution of area source control provided in an embodiment of the present invention and recoverying and utilizing method flow chart.
Reference：
The main ridges of 11-, 12- branch ridges, 2- water plant planting canals, 3- collection drainage facilities, 4- filtering absorption facilities, 41- inhales
Water pump, 42- suction pumps, 43- screen packs, 44- nitrogen phosphorus sorbing materials, 5- water storage facilities, 51- emptying gates, 6- shunt conduits,
61- main sides, 62- branch end.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is a kind of farmland nitrogen phosphorus pollution of area source control provided in an embodiment of the present invention and recycling system structural representation
Figure；Fig. 2 is a kind of farmland nitrogen phosphorus pollution of area source control provided in an embodiment of the present invention and shunt conduit in recycling system
Structural representation.As depicted in figs. 1 and 2, the system includes：Facility, collection drainage facility 3, filtering absorption facility 4 and water storage is absorbed to set
Apply 5.
Specifically, absorbing facility includes：It is arranged on the main ridge 11 of farmland surrounding and the branch field being arranged in length and breadth inside farmland
The ridge 12, and it is arranged on the water plant planting canal 2 around main ridge 11；Wherein, planted on main ridge 11 and branch ridge 12
Have to be planted in green plant, and water plant planting canal 2 and be implanted with water plant；Green plant is set on main ridge 11 and branch ridge 12, is used
The moisture of the nitrogenous P elements being had more than needed in farmland is absorbed；The planting aquatic plants in water plant planting canal 2, for utilizing agriculture
Tanaka crosses the moisture of the nitrogenous P elements of main ridge.
It is preferred that main ridge width be 1.5~2.0m, be highly 6~8cm；Branch ridge width is 0.6-1.2m, height
It is 3~5cm；Water plant planting width of the channel degree is 2.0~3.0m, and depth is 1.0~1.5m.
It is preferred that water plant includes：One or more in reed, wild rice stem, wild kind, aunt calamus.
It is preferred that green plant includes：One or more in arbor, shrub, draft economic plants.
It should be noted that the present invention is by setting ridge and plant on ridge green plant, and water plant kind is set
Canal 2 and the planting aquatic plants in water plant planting canal are planted, makes the nitrogen in the moisture containing nitrogen P elements being had more than needed in farmland
The pollution of P elements has obtained preferable control, and nitrogen P elements are carried out on the premise of it need not excavate multiple irrigation canals and ditches drainages
It is effective to recycle.
Specifically, collection drainage facility 3 is the collecting-tank that setting is affixed with water plant planting canal 2；Collection drainage facility 3 and aquatic plant
Species plant the bottom of the communications ports bottom higher than water plant planting canal 2 of canal 2, and the depth of collection drainage facility 3 is more than aquatic plant
Species plant the depth of canal 2.
It should be noted that communications ports are located on water plant planting canal 2 and the shared wall of collection drainage facility 3；Connection
Higher than the bottom of water plant planting canal 2, on the one hand ensure that in water plant planting canal 2 has water to supply water all the time for the bottom of port
Plant grows, and on the other hand ensure that unnecessary moisture content in water plant planting canal 2 can be flowed into smoothly in collection drainage facility 3
Portion；Collect the depth of the depth more than water plant planting canal 2 of drainage facility 3, make that in collection drainage facility 3 more moisture content can be gathered.
Specifically, the embedded underground between collection drainage facility and the water plant planting canal has pipeline；Wherein, pipeline includes
Main pipeline, shunt conduit 6 and multiple branch pipe(tube)s；Main pipeline one end with collection drainage facility 3 bottom connect, the main pipeline other end with divide
The main side 61 in flow tube road 6 connects, and multiple branch ends 62 of shunt conduit 6 are respectively by multiple branch pipe(tube)s and water plant planting canal 2
Connection.
It should be noted that by setting underground piping, making in the moisture and collection drainage facility 3 in water plant planting canal 2
Moisture constantly circulate, i.e., after the nitrogen P elements in water plant planting canal 2 are absorbed by water plant, nitrogen and phosphorus content reduce, and
Moisture in collection drainage facility 3 is constantly injected in water plant planting canal 2, increased nitrogen and phosphorus content, further to nitrogen phosphorus unit
Element has carried out effective recycling.
Specifically, filtering absorption facility 4 is filtering adsorption tank；Middle part is provided with the He of screen pack 43 in filtering absorption facility 4
Nitrogen phosphorus sorbing material 44, and screen pack 43 and the integrally-built both sides of nitrogen phosphorus sorbing material 44 are respectively the first buffer zone and
Two buffer zones；Pulsating pump 43 is provided with first buffer zone, and the first buffer zone passes through the water pipe of pulsating pump 43 and catchments
Facility 3 is connected；Suction pump 44 is provided with second buffer zone, and the second buffer zone is set by the water pipe of suction pump 44 and water storage
Apply 5 connections.
It should be noted that when the water in collecting drainage facility 3 reach a certain height, (water in collecting drainage facility 3 will be inverse
When flowing in water plant planting canal 2), the water collected in drainage facility 3 is drawn to by first buffering area domain by pulsating pump 43；First delays
Moisture content in punching difference passes sequentially through screen pack 43 and nitrogen phosphorus sorbing material 44 flows into second buffering area domain；By suction pump by
Water in two buffer areas is preserved in being evacuated to water storage facility 5.
It is preferred that the length of filtering absorption facility 4 is 2.0~3.5m, and highly it is 2.5m, width is 1.0~1.5m.
It is preferred that nitrogen phosphorus sorbing material is nitrogen phosphorus adsorbent.
It should be noted that the present invention is had by setting filtering absorption facility 4 to the moisture in collection drainage facility 3
The nitrogen phosphorus absorption of effect, greatly reduces the nitrogen and phosphorus content of the moisture in inflow water storage facility 5, i.e., the moisture in water storage facility 5 can
To there is multiple use.
Specifically, water storage facility 5 is reservoir；Emptying gate 51, and emptying gate 51 are provided with water storage facility 5 higher than collection
The top of drainage facility 3.
It should be noted that water storage facility 5 is set near collection drainage facility 3.
It should be noted that the present invention controls the moisture in water storage facility 5 to stream in collection drainage facility 3 by emptying gate 51
Enter, that is, ensure that the moisture in water storage facility 5 is most, in turn ensure that the moisture in collection drainage facility 3 can constantly inject aquatic plant
Species are planted in canal.
Fig. 3 is a kind of farmland nitrogen phosphorus pollution of area source control provided in an embodiment of the present invention and recoverying and utilizing method flow chart.
As shown in figure 3, the method includes：
Step S101, green plant is planted on main ridge and branch ridge.
Step S102, the planting aquatic plants in water plant planting canal.
Step S103, the moisture of the nitrogenous P elements being had more than needed in farmland is crossed main ridge and is flowed into water plant planting canal.
Step S104, the moisture of the nitrogenous P elements in water plant planting canal flows into collection drainage facility by communications ports
It is interior.
Step S105, a moisture part for the nitrogenous P elements in collection drainage facility is back to water plant planting by pipeline
In canal；Moisture another part of nitrogenous P elements in collection drainage facility is flowed into water storage facility by filtering absorption facility.
Step S106, the moisture in water storage facility is flowed into collection drainage facility by emptying gate.
It is preferred that when the moisture for collecting the nitrogenous P elements in drainage facility is no longer flow into water plant planting canal, opening
Emptying gate, the water in water storage facility is flowed into collection drainage facility；When the moisture of the nitrogenous P elements in collection drainage facility is continued to flow into
When in water plant planting canal, emptying gate is closed, the water in water storage facility is no longer flow into collection drainage facility.Remain collection
Hydraulic pressure in drainage facility allows the water in collection drainage facility to be flowed into by pipeline aquatic more than the hydraulic pressure in water plant planting canal
In planting canal.
Disclosed above is only several specific embodiments of the invention, and those skilled in the art can be carried out to the present invention
It is various to change with modification without departing from the spirit and scope of the present invention, if these modifications of the invention and modification belong to the present invention
Within the scope of claim and its equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of farmland nitrogen phosphorus pollution of area source is controlled and recycling system, it is characterised in that including：Absorb facility, catchmenting sets
Apply, filter absorption facility and water storage facility；
The absorption facility includes：It is arranged on the main ridge of farmland surrounding and the branch ridge being arranged in length and breadth inside farmland, Yi Jishe
Put the water plant planting canal around main ridge；Wherein, planted on main ridge and branch ridge and be implanted with green plant, and water plant
Planted in plantation canal and be implanted with water plant；
Green plant is set on main ridge and branch ridge, the moisture for absorbing the nitrogenous P elements being had more than needed in farmland；In aquatic plant
Species plant planting aquatic plants in canal, for the moisture using the nitrogenous P elements that main ridge is crossed in farmland；
The collection drainage facility is the collecting-tank that setting is affixed with the water plant planting canal；The collection drainage facility and described aquatic
The communications ports bottom of planting canal higher than the water plant planting canal bottom, and it is described collection drainage facility depth be more than
The depth of the water plant planting canal；Pipeline is embedded between the collection drainage facility and the water plant planting canal；Its
In, the pipeline includes main pipeline, shunt conduit and multiple branch pipe(tube)s；Described main pipeline one end and the bottom for collecting drainage facility
Connection, the main pipeline other end is connected with the shunt conduit main side, and multiple branch ends of the shunt conduit are respectively by more
The individual branch pipe(tube) is connected with the water plant planting canal；
The filtering absorption facility is filtering adsorption tank；The filtering absorption facility is internally provided with screen pack and nitrogen phosphorus adsorption material
Material, and the screen pack and the integrally-built both sides of nitrogen phosphorus sorbing material are respectively the first buffer zone and the second buffer area
Domain；Pulsating pump is provided with first buffer zone, and first buffer zone is catchmented by the water pumping pipe that absorbs water with described
Facility is connected；Suction pump, and second buffer zone are provided with second buffer zone by water pumping pipe and the institute of drawing water
State water storage facility connection；
The water storage facility is reservoir；Emptying gate is provided with the water storage facility, and emptying gate sets higher than described catchmenting
Apply top.
2. farmland nitrogen phosphorus pollution of area source as claimed in claim 1 is controlled and recycling system, it is characterised in that described master
Ridge width is 1.5~2.0m, is highly 6~8cm；The branch ridge width is 0.6-1.2m, is highly 3~5cm；The water
Plant plantation width of the channel degree is 2.0~3.0m, and depth is 1.0~1.5m.
3. farmland nitrogen phosphorus pollution of area source as claimed in claim 1 is controlled and recycling system, it is characterised in that described aquatic
Plant includes：One or more in reed, wild rice stem, angustifolia arrowhead herb, calamus.
4. farmland nitrogen phosphorus pollution of area source as claimed in claim 1 is controlled and recycling system, it is characterised in that the green plant
Including：One or more in arbor, shrub, draft economic plants.
5. farmland nitrogen phosphorus pollution of area source as claimed in claim 1 is controlled and recycling system, it is characterised in that the filtering
The length for adsorbing facility is 2.0~3.5m, is highly 2.5m, and width is 1.0~1.5m.
6. farmland nitrogen phosphorus pollution of area source as claimed in claim 1 is controlled and recycling system, it is characterised in that the nitrogen phosphorus
Sorbing material is nitrogen phosphorus adsorbent.
7. a kind of farmland nitrogen phosphorus pollution of area source is controlled and recoverying and utilizing method, it is characterised in that including：
Green plant is planted on main ridge and branch ridge；
The planting aquatic plants in water plant planting canal；
The moisture of the nitrogenous P elements being had more than needed in farmland is crossed main ridge and is flowed into water plant planting canal；
The moisture of the nitrogenous P elements in water plant planting canal is flowed into collection drainage facility by communications ports；
A moisture part for nitrogenous P elements in collection drainage facility is back in water plant planting canal by pipeline；Collection drainage facility
Moisture another part of interior nitrogenous P elements is flowed into water storage facility by filtering absorption facility；
Moisture in water storage facility is flowed into collection drainage facility by emptying gate.
8. farmland nitrogen phosphorus pollution of area source as claimed in claim 7 is controlled and recoverying and utilizing method, it is characterised in that set when catchmenting
The moisture of the nitrogenous P elements in applying is no longer flow into when in water plant planting canal, opens emptying gate, the water in water storage facility
Flow into collection drainage facility；When the moisture for collecting the nitrogenous P elements in drainage facility is continued to flow into water plant planting canal, close
Emptying gate, the water in water storage facility is no longer flow into collection drainage facility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071099.8A CN106882899B (en) | 2017-02-09 | 2017-02-09 | Farmland nitrogen and phosphorus non-point source pollution control and recycling system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071099.8A CN106882899B (en) | 2017-02-09 | 2017-02-09 | Farmland nitrogen and phosphorus non-point source pollution control and recycling system and method |
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| CN106882899A true CN106882899A (en) | 2017-06-23 |
| CN106882899B CN106882899B (en) | 2020-05-22 |
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| CN107500471A (en) * | 2017-09-04 | 2017-12-22 | 西北农林科技大学 | A kind of method for hindering control sloping upland nitrogen and phosphorus loss |
| CN107879556A (en) * | 2017-11-24 | 2018-04-06 | 中国农业科学院农业环境与可持续发展研究所 | A kind of agricultural area source pollutants enter river load and cut down system |
| CN107879556B (en) * | 2017-11-24 | 2020-11-03 | 中国农业科学院农业环境与可持续发展研究所 | Agricultural non-point source pollutant river entering load reduction system |
| CN109970136A (en) * | 2019-04-28 | 2019-07-05 | 生态环境部南京环境科学研究所 | A kind of farmland water-break synchronous nitrogen and phosphorus removal device |
| CN111101479A (en) * | 2019-12-31 | 2020-05-05 | 北京林业大学 | Construction method of improved ecological ridge for reducing farmland runoff impact and non-point source pollution |
| CN112129918A (en) * | 2020-09-09 | 2020-12-25 | 云南农业大学 | Terrace nitrogen and phosphorus loss monitoring system device |
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| CN106882899B (en) | 2020-05-22 |
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